HSI: fix omap ssi driver dependency

[Arnd Bergmann]

The SSI protocol implementation has an incorrect dependency on the OMAP_SSI
driver, which allows SSI to be built-in while the underlying OMAP_SSI
implementation is a loadable module, causing a link error.

This changes the dependency to the simpler 'depends on OMAP_SSI' that also
ensures that SSI-protocol can only be a module if OMAP_SSI is not built-in.

Signed-off-by: Arnd Bergmann <arnd at arndb.de>
Cc: Sebastian Reichel <sre at kernel.org>
Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75 at gmail.com>
Cc: Pavel Machek <pavel at ucw.cz>
---
diff --git a/drivers/hsi/clients/Kconfig b/drivers/hsi/clients/Kconfig
index 71b9f9a..bc60dec 100644
--- a/drivers/hsi/clients/Kconfig
+++ b/drivers/hsi/clients/Kconfig
@@ -15,7 +15,7 @@ config NOKIA_MODEM
 
 config SSI_PROTOCOL
 	tristate "SSI protocol"
-	depends on HSI && PHONET && (OMAP_SSI=y || OMAP_SSI=m)
+	depends on HSI && PHONET && OMAP_SSI
 	help
 	If you say Y here, you will enable the SSI protocol aka McSAAB.